307 lines
11 KiB
Text
307 lines
11 KiB
Text
-*- text -*-
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Changes in 2.10:
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Support for ATMEL AVR.
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Support for IBM 370 ELF. Somewhat experimental.
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Support for numbers with suffixes.
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Added support for breaking to the end of repeat loops.
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Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL).
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New .elseif pseudo-op added.
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New --fatal-warnings option.
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picoJava architecture support added.
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Motorola MCore 210 processor support added.
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A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386
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assembly programs with intel syntax.
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New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code.
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Added -gdwarf2 option to generate DWARF 2 debugging information.
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Full 16-bit mode support for i386.
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Greatly improved instruction operand checking for i386. This change will
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produce errors or warnings on incorrect assembly code that previous versions of
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gas accepted. If you get unexpected messages from code that worked with older
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versions of gas, please double check the code before reporting a bug.
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Weak symbol support added for COFF targets.
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Mitsubishi D30V support added.
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Texas Instruments c80 (tms320c80) support added.
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i960 ELF support added.
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Changes in 2.9:
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Texas Instruments c30 (tms320c30) support added.
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The assembler now optimizes the exception frame information generated by egcs
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and gcc 2.8. The new --traditional-format option disables this optimization.
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Added --gstabs option to generate stabs debugging information.
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The -a option takes a new suboption, m (e.g., -alm) to expand macros in a
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listing.
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Added -MD option to print dependencies.
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Changes in 2.8:
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BeOS support added.
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MIPS16 support added.
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Motorola ColdFire 5200 support added (configure for m68k and use -m5200).
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Alpha/VMS support added.
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m68k options --base-size-default-16, --base-size-default-32,
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--disp-size-default-16, and --disp-size-default-32 added.
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The alignment directives now take an optional third argument, which is the
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maximum number of bytes to skip. If doing the alignment would require skipping
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more than the given number of bytes, the alignment is not done at all.
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The ELF assembler has a new pseudo-op, .symver, used for symbol versioning.
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The -a option takes a new suboption, c (e.g., -alc), to skip false conditionals
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in listings.
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Added new pseudo-op, .equiv; it's like .equ, except that it is an error if the
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symbol is already defined.
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Changes in 2.7:
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The PowerPC assembler now allows the use of symbolic register names (r0, etc.)
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if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.) can be
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used any time. PowerPC 860 move to/from SPR instructions have been added.
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Alpha Linux (ELF) support added.
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PowerPC ELF support added.
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m68k Linux (ELF) support added.
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i960 Hx/Jx support added.
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i386/PowerPC gnu-win32 support added.
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SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the
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default is to build COFF-only support. To get a set of tools that generate ELF
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(they'll understand both COFF and ELF), you must configure with
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target=i386-unknown-sco3.2v5elf.
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m88k-motorola-sysv3* support added.
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Changes in 2.6:
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Gas now directly supports macros, without requiring GASP.
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Gas now has an MRI assembler compatibility mode. Use -M or --mri to select MRI
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mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the ``.mri
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0'' is seen; this can be convenient for inline assembler code.
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Added --defsym SYM=VALUE option.
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Added -mips4 support to MIPS assembler.
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Added PIC support to Solaris and SPARC SunOS 4 assembler.
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Changes in 2.4:
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Converted this directory to use an autoconf-generated configure script.
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ARM support, from Richard Earnshaw.
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Updated VMS support, from Pat Rankin, including considerably improved debugging
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support.
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Support for the control registers in the 68060.
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Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to
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provide for possible future gcc changes, for targets where gas provides some
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features not available in the native assembler. If the native assembler is
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used, it should become obvious pretty quickly what the problem is.
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Usage message is available with "--help".
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The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3
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also, but didn't get into the NEWS file.)
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Weak symbol support for a.out.
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A bug in the listing code which could cause an infinite loop has been fixed.
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Bugs in listings when generating a COFF object file have also been fixed.
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Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by Paul
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Kranenburg.
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Improved Alpha support. Immediate constants can have a much larger range now.
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Support for the 21164 has been contributed by Digital.
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Updated ns32k (pc532-mach, netbsd532) support from Ian Dall.
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Changes in 2.3:
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Mach i386 support, by David Mackenzie and Ken Raeburn.
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RS/6000 and PowerPC support by Ian Taylor.
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VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit,
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based on mail received from various people. The `-h#' option should work again
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too.
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HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work
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with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special
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version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve
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this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu
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in the "dist" directory.
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Vax support in gas fixed for BSD, so it builds and seems to run a couple simple
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tests okay. I haven't put it through extensive testing. (GNU make is
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currently required for BSD 4.3 builds.)
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Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is
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based on code donated by CMU, which used an a.out-based format. I'm afraid the
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alpha-a.out support is pretty badly mangled, and much of it removed; making it
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work will require rewriting it as BFD support for the format anyways.
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Irix 5 support.
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The test suites have been fixed up a bit, so that they should work with a
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couple different versions of expect and dejagnu.
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Symbols' values are now handled internally as expressions, permitting more
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flexibility in evaluating them in some cases. Some details of relocation
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handling have also changed, and simple constant pool management has been added,
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to make the Alpha port easier.
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New option "--statistics" for printing out program run times. This is intended
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to be used with the gcc "-Q" option, which prints out times spent in various
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phases of compilation. (You should be able to get all of them printed out with
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"gcc -Q -Wa,--statistics", I think.)
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----------------------------------------------------------------
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Changes in 2.2:
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RS/6000 AIX and MIPS SGI Irix 5 support has been added.
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Configurations that are still in development (and therefore are convenient to
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have listed in configure.in) still get rejected without a minor change to
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gas/Makefile.in, so people not doing development work shouldn't get the
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impression that support for such configurations is actually believed to be
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reliable.
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The program name (usually "as") is printed when a fatal error message is
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displayed. This should prevent some confusion about the source of occasional
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messages about "internal errors".
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ELF support is falling into place. Support for the 386 should be working.
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Support for SPARC Solaris is in. HPPA support from Utah is being integrated.
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Symbol values are maintained as expressions instead of being immediately boiled
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down to add-symbol, sub-symbol, and constant. This permits slightly more
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complex calculations involving symbols whose values are not alreadey known.
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DBX-style debugging info ("stabs") is now supported for COFF formats.
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If any stabs directives are seen in the source, GAS will create two new
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sections: a ".stab" and a ".stabstr" section. The format of the .stab
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section is nearly identical to the a.out symbol format, and .stabstr is
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its string table. For this to be useful, you must have configured GCC
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to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB
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that can use the stab sections (4.11 or later).
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LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS
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support is in progress.
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----------------------------------------------------------------
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Changes in 2.1:
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Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been
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incorporated, but not well tested yet.
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Altered the opcode table split for m68k; it should require less VM to compile
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with gcc now.
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Some minor adjustments to add (Convergent Technologies') Miniframe support,
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suggested by Ronald Cole.
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HPPA support (running OSF only, not HPUX) has been contributed by Utah. This
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includes improved ELF support, which I've started adapting for SPARC Solaris
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2.x. Integration isn't completely, so it probably won't work.
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HP9000/300 support, donated by HP, has been merged in.
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Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support.
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Better error messages for unsupported configurations (e.g., hppa-hpux).
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Test suite framework is starting to become reasonable.
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----------------------------------------------------------------
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Changes in 2.0:
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Mostly bug fixes.
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Some more merging of BFD and ELF code, but ELF still doesn't work.
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----------------------------------------------------------------
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Changes in 1.94:
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BFD merge is partly done. Adventurous souls may try giving configure the
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"--with-bfd-assembler" option. Currently, ELF format requires it, a.out format
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accepts it; SPARC CPU accepts it. It's the default only for OS "elf" or
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"solaris". (ELF isn't really supported yet. It needs work. I've got some
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code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not fully
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merged yet.)
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The 68K opcode table has been split in half. It should now compile under gcc
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without consuming ridiculous amounts of memory.
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A couple data structures have been reduced in size. This should result in
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saving a little bit of space at runtime.
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Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF
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code provided ROSE format support, which I haven't merged in yet. (I can make
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it available, if anyone wants to try it out.) Ralph's code, for BSD 4.4,
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supports a.out format. We don't have ECOFF support in just yet; it's coming.
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Support for the Hitachi H8/500 has been added.
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VMS host and target support should be working now, thanks chiefly to Eric
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Youngdale.
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----------------------------------------------------------------
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Changes in 1.93.01:
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For m68k, support for more processors has been added: 68040, CPU32, 68851.
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For i386, .align is now power-of-two; was number-of-bytes.
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For m68k, "%" is now accepted before register names. For COFF format, which
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doesn't use underscore prefixes for C labels, it is required, so variable "a0"
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can be distinguished from the register.
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Last public release was 1.38. Lots of configuration changes since then, lots
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of new CPUs and formats, lots of bugs fixed.
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Local variables:
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fill-column: 79
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End:
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